(Gamma)(m)(c)^2's definitions

LIGO

The most kick-ass interferometer ever built. Consists of a 200W laser split through two 4km arms, bouncing back, and interfering with itself. Can detect changes of length of less than the diameter of a proton.

LIGO just detected the ripples in spacetime originating from two black holes merging together.

by (Gamma)(m)(c)^2 January 11, 2018